Got rattles, vibrations, or need to cushion something? This 40-piece rubber washer kit is a problem-solver. You get eight different sizes (from 6mm up to 40mm in outer diameter), five pieces of each, all made from solid black neoprene rubber. They're great for isolating vibration – think under appliances, in car panels, between metal parts, or as spacers in furniture. They reduce noise, prevent scratching, and help absorb shocks. The rubber is tough, resists oil and temperature, and has good flexibility. Comes in a clear, compartmentalized box so you can keep them organized and see what you have. No more searching for that one right size! Use them for DIY projects, electronics, machinery, plumbing, or automotive fixes. Just place them where you need cushioning or spacing. Super handy to have in your toolbox or workshop. A simple, cheap way to make things quieter and more secure.